User Agent String.Com

User Agent String explained :

Copy/paste any user agent string in this field and click 'Analyze'

Safari 4.0.3

Mozilla

MozillaProductSlice. Claims to be a Mozilla based user agent, which is only true for Gecko browsers like Firefox and Netscape. For all other user agents it means 'Mozilla-compatible'. In modern browsers, this is only used for historical reasons. It has no real meaning anymore